Locomotive



Feb. 17, 192.1.

N ssEs Patented Feb. 17, 1931 UNITED, STATES ALFRED w. BRUCE, or nnwYasmin. Y;

ocoMoErrvE Application filed May 1, 1929. Serial No. 359,464;

The object of the invention is to provide a simpler and cheaper form ofsuch extension than has heretofore been available, in'the form of anintegral casting, preferably of steel, that may be readily applied tothe main frames, and in addition form a support for the fire box,without the complicated cross members and bracing heretofore deemedessential. V

Heretofore members of the class described have been formed as cradleswith integral transoms at either extremity of the side members, andother complicated transverse braces formed therewith, 2 The improvementclaimed is hereinafter fully set forth. V

In the accompanying drawing, Figure 1 is a perspective view of a rearframe extension, and a part of the main frames with which it may beoperatively associated; and Fig. 2 isa View in transverse section of theextension illustrating an alternative construction. V I

In the practice of the invention, referring descriptively to thespecific embodiment thereof which is hereinexemplified in Fig. 1, themain frames 1, of locomotive, have formed in their rear'extremities theseats 22, for the'reception of the forward ends of the side members, 33,of the rear frame extension, denoted generally by the letter E,comprising, beside the side members 38, the rear transom 4-, which hasformed in it the draw-bar pocket 5 and the outwardly extend ing brackets6-6, adapted to form supports for a boiler bearing not shown. The sidemembers areformed ofsubst'antially channel shaped cross section, whereina vertical web.

7 has at top and bottom, the inwardly extending horizontal flanges 8'and9; whereof the top flange 8 is preferably of greater width than thebottom flange 9, for reasons which will presently appear. 7 1

The extension is shown to consist of a unitarystructure comprising sidemembers 3-3,

secured by Letters Patent is:

v the frames together.

gether.

jOined'atthe rear end only by the-transom 4, a

and adapted to: be associated Withthe main frames 1-1 by the insertionof the forward ends of said side members in the seats 21-2,

and securing them thereto by appropriate means, such-as bolting orWelding;

lVhen so I assembled, the 'wider upper flanges 8; project inwardly to"form convenient seats for the reception'of'jSupports-for auxiliary partsofthe" locomotive ensemble, or, in some cases, additional boilerbearings, while thenarrower flanges 9, permit unobstructed inspection-ofsuch parts.

In certain cases it maybe desirable to have the side brackets'6-6 formedseparately, as shown, in Fig. 2 wherein the separate side brackets 10,are formed separately, and'secured to the side members 3, by theboltsll, passing through the vertical web 7. Y

The invention claimed and desired to' be 7 0 1. A rearframe extensionfor locomotives, comprising, in an integral casting, a cross member andside members extending forwardly therefrom, said side members, forwardof said cross member, being'free of integral cross members throughouttheir entire lengths, each being provided,1upon a vertical wall at theforward end with a seating surface adapted for engagement with acorresponding seating surface of the locomotive: main frame forwardthereof, for securing 2. A rear frame extension for locomotives,

comprising, in an integral casting, a cross v member at the extreme rearend of the casts5 ing surface of the locomotive mainframe forwardthereof, for securing the frames to- 3. A rear'frame extension forlocomotives, comprising, in an integral casting, across member and sidemembers extending ,for- 1 wardly therefrom, said side members, forwardof said cross member, being free of in tegral cross members throughouttheir entire lengths, each being provided with a channel shaped forwardend having, upon a side wall thereof, a seating surface adapted forengagement with a corresponding seating surface of the locomotive mainframe forward thereof, for securing the frames together.

4. A rear frame extension for locomotives, comprising, in an integralcasting, a cross member, and channel shaped side members comprising avertical web and inwardly extending horizontal flanges, the upper flangebeing of substantially greater width than the lower flange, said sidemembers extending forwardly from the cross member and being free fromintegral cross members throughout their entire lengths, forward of saidcross member, each being provided, upon a vertical wall at the forwardend, with a seating surface adapted for engagement with a correspondingseating surface of the locomotive main frame forward thereof, forsecuring the frames together.

ALFRED W. BRUCE.

